Chapter 8- Operating Instructions Liebert Hipulse E User Manual
Single or '1+N' UPS System Operator Control and Display Panel
Page 8-4 (07/04)
Operator Panel & LCD Display
15 LCD Display
The LCD display is capable of showing four rows of 20 characters; the top row displays the UPS warning and
alarm messages and the lower row indicate the selected metered parameters.
During normal operation the top line of the LCD panel shows the general UPS Status (e.g. NORMAL
OPERATION ) and the bottom line will indicate the current time and date – this is known as the ‘Default
Screen’. Pressing the ESCape button [9] changes the displayed information to indicate the Communications Port
status (if connected) and the version of the software fitted to the UPS control boards.
Pressing the ENTER button [12] from the Default Screen gives the operator access to the ‘Measurements/Alarm
history’ menu which facilitates access to the following measurements:
• Output Parameters
– Output Voltage (L-L or L-N for all three phases)
– Output Current (all three phase currents displayed in Amperes or as a % Load)
– Output Power (for all three phases displayed in kW or kVA)
– Output Frequency (of inverter and bypass mains)
• Input Parameters
– Input Voltage (L-L for all three phases)
• Battery Parameters
– Battery Voltage
– Battery Current
– Battery Charge (in %) or remaining autonomy time when the battery is discharging.
• Temperature
– Battery Temperature (°C)
Alarm History: It provides current and historical events and the alarms, with date stamping.
Running Time: It shows the operating hours of the UPS.
Bargraph Section
This following functional area shows the various UPS load and battery charging conditions.
16 Load Battery
The amber LED situated at the beginning of the % Autonomy bargraph illuminates when the battery voltage has
discharged to 1.8V/cell and indicates that the battery is approaching its low voltage cut-off point and the UPS will
shortly shut-down.
17 % Battery state Autonomy time bargraph
When the battery is being charged (normal) the five leds illuminate progressively to indicate the state of battery
charge as a percentage of a charge. When the battery is discharging (battery on-load) the bargraph function
changes to provide an indication of the remaining battery autonomy time.
With a fully charged battery all five LEDs are illuminated indicating than time remaining is dependent upon both
the battery A/Hr capacity and the applied percentuage load. An autonomy is determined from the type of battery
used, as the autonomy falls below this time the LEDs will extinguish in steps starting from the right-hand end.
18 % Load bargraph
The five leds illuminate progressively to indicate the applied load as a percentage of the rated maximum current,
increasing in 20% steps to 100% of full load when all five are illuminated.
19 Overload
The amber LED situated at the end of the % Load bargraph illuminates if the applied load exceeds 100% of the
module(s) rated output current. This indication will be accompanied by an audible alarm and an alarm message.
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